Another article, see "
Brachycephalic Syndrome" in ACVS wherein authors write (emphasis added).
Certain breeds of dogs and cats are prone to difficult, obstructive breathing because of the shape of their head, muzzle and throat. The most common dogs affected are the “brachycephalic” breeds. Brachycephalic means “short-headed.” Common examples of brachycephalic dog breeds include the English bulldog, French bulldog, Pug, Pekingese, and Boston terrier. These dogs have been bred to have relatively short muzzles and noses and, because of this, the throat and breathing passages in these dogs are frequently undersized or flattened (Figure 1). Persian cats also have a brachycephalic conformation.
Article defines "Brachycephalic Syndrome" as "combination of elongated soft palate, stenotic nares, and everted laryngeal saccules."